So let's explain what the reason I have to make this post.

UNDERTALE COLORIZING MODS ARE OFF.

Let us look at an example, shall we?

...these are all off...

Everything looks disconnected but FLOWEY is the main issue here, His petals don't connect to his head!

If you're coloring these sprites to match their sprites, you DO need to put in more effort then this!

....just go read this post by soup. It shows my complaints in a "how to fix it" way.

...so MY solution?

TS!UNDERSWAP'S COLORIZATION STYLE!!!

"TS!Underswap" (for those who don't know) is a differently done take fangame on the Underswap au, made by Team Switched!

Their fangame has a neat little feature~

COLORIZED SPRITES

Keep the original black outlines, just color in the sprites!

It looks...SO MUCH BETTER.

One plain color, all where the white should be, it genuinely looks GREAT!

Now let me make my OWN example...with Mad Mew Mew!

See? Looks much better, right?!

Looks cute, interesting, and the color fits Mad Mew Mew!

I grabbed colors for some of the others too!:

Image 1: Toriel
Image 2: Sans
Image 3: Papyrus
Image 4: Undyne
Image 5: Alphys
Image 6: Box Mettaton
Image 7: Mettaton EX
Image 8: Asgore
Image 9: Flowey

...so ya :D!