This is an awesome list! I was contemplating something like this a while ago, but I had no idea where to start. I'm so glad you started this! I'll definitely add this to the list of lists.

As for your comment on Volcanic Eruption and other color-hate cards, don't feel bad about leaving them out. I would not consider them eligible for this list either. Color-hate between & is actually pretty normal, as well as color-hate (versus enemy colors) of some degree in all colors. like Black Knight that one card that turns all mountains into plains, or something like that.

Also: Scryb Sprites

And: do you think Goblin Gaveleer would count? He always seemed odd to me, like he should be & human instead.

Gattison and I talk about this all the time! Here's are few that you might want to add: Dawn Charm, Resurrection, It That Rides as One  ^Flip and I believe there are a few other white creatures with trample. Im sure Ill think of some others. Thanks for putting this together!

There are some blue creatures that have First Strike like these: Narwhal and Illusionary Wall. I think there are a few others.

Gattison: thanks! IMO Goblin Gaveleer is ok because red sometimes does things with artifacts and equipment, and +X/+0 and trample are both red.

eyes2sky: I considered Resurrection, but with stuff like Emeria Shepherd, Defy Death and Bishop of Rebirth being printed relatively recently I didn't think it was extreme enough to warrant inclusion. Mark Rosewater has said that white can occasionally get reanimation. The others work though!

Some cards I found:

Harmless Offering is a colorshifted Donate, Kazuul, Tyrant of the Cliffs could be white, Molten Influence is a "counterspell" in red, Measure of Wickedness should be probably red, Dragonmaster Outcast is a creature that rewards your ramp and I feel he could be green, Stromgald Spy looks at target player's hand and could be blue, Treacherous Urge, Enslave and Ritual of the Machine are threaten/control magic effects in black, The Great Aurora and Ezuri's Predation are wraths in green, Bellowing Tanglewurm has a black keyword, Curse of the Swine is mass removal with exile in blue, Primal Order is direct damage in green, Mana Vortex and Land Equilibrium are land destruction in blue, Web of Inertia is a strange pillowfort card and graveyard hoser in blue, Concordant Crossroads gives haste in green (???), Oath of Lieges ramps in white, Spoils of War gives +1/+1 counters in black, Touch of Darkness is colorshifting in black, Infernal Genesis gives everybody tokens in black, Countryside Crusher should probably be Golgari, Mana Flare is a mana doubler in red (????), Dreams of the Dead is creature recursion in blue, Reality Twist is ???, Imprisoned in the Moon is straight up removal in blue, Icy Prison is a political Oblivion Ring in blue, Not Forgotten is a green effect, Stunted Growth discards cards from opponent's hand in green...

Another two:

Artifact Blast is another counterspell in red, and Skullscorch is a conditional Hymn to Tourach.

Also Witch Engine is a strange card to be in black...

Thanks, Uskebasi! Curse of the Swine just takes a blue effect and puts it on an X spell, and despite how wrath-like Ezuri's Predation is, making tokens and fighting are green. Bazaar Trader shows that making players gain control of your things can be red too. The only effect in existence similar to Reality Twist is on an artifact (Naked Singularity), so I really don't know where in the color pie that's supposed to lie. Most of the others I agree with, though.

Misguided Rage?

also: Hissing Iguanar is more of a , no?

and Crypt Ripper. haste in black?

https://scryfall.com/search?q=o%3Ahaste+identity%3Ab+t%3Acreature&order=cmc shows that haste is a black thing too.

Spirit Flare?

Fanatical Devotion?

I love the list, only thing is I think its a little exagerated and could use a little trimming.

Hour of Eternity is the eternalize mechanic, which was primary in blue, it is similar to multiple other blue effects, such as dredge in how it exiles cards from a graveyard, or clone and it puts a copy of a creature onto the battlefield.

It That Rides as One (once it has been flipped to have that name) is colorless. Colourless who have often had access to all of the keywords it possesses

Shrouded Lore seems like a very black card, its the combination of returning something from the grave and forceing your opponent to "chose" something that benifits you, similar to Torment of Hailfire, Forbidden Ritual, and Tyrant's Choice

Avoid Fate: this card is the progenetor to cards they now print like Hapatra's Mark, Sheltering Word so I'm not sure if this should be considered a break or bend

Love the list, hope you like the suggestions

Verbatiam, those are all good points, but that's why this is a list of bends, not just breaks. also It That Rides as One  ^Flip has a colorless identity, but it's essentially a white card (Lone Rider  ^Flip), and white doesn't usually have access to trample. Normally black cards only get creatures back from the graveyard to the hand, so Shrouded Lore's potential to get back other card types pushes it towards green territory (which it was originally, but, Planar Chaos). Avoid Fate is a precursor to now-normal hexproof instants, but there will be instances in which they don't do the same thing (it doesn't protect against abilites or sorceries, for example). I included Hour of Eternity because it's essentially a reanimation spell in mono-blue, and mono-blue decks typically lack creature recursion - this list is meant to help out decks with color restrictions overcome their intrinsic shortcomings.