#but yeah modern anime's color design is saddening to me. the general trend leans towards white/grey desaturated palettes

[bixels]

I think 90% of my gripes with how modern anime looks comes down to flat color design/palettes.

Non-cohesive, washed-out color palettes can destroy lineart quality. I see this all the time when comparing an anime's lineart/layout to its colored/post-processed final product and it's heartbreaking. Compare this pre-color vs. final frame from Dungeon Meshi's OP.

So much sharpness and detail and weight gets washed out and flattened by 'meh' color design. I LOVE the flow and thickness and shadows in the fabrics on the left. The white against pastel really brings it out. Check out all the detail in their hair, the highlights in Rin's, the different hues to denote hair color, the blue tint in the clothes' shadows, and how all of that just gets... lost. It works, but it's not particularly good and does a disservice to the line-artist.

I'm using Dungeon Meshi as an example not because it's bad, I'm just especially disappointed because this is Studio Trigger we're talking about. The character animation is fantastic, but the color design is usually much more exciting. We're not seeing Trigger at their full potential, so I'm focusing on them.

Here's a very quick and messy color correct. Not meant to be taken seriously, just to provide comparison to see why colors can feel "washed out." Top is edit, bottom is original.

You can really see how desaturated and "white fluorescent lighting" the original color palettes are.

[Remember: the easiest way to make your colors more lively is to choose a warm or cool tint. From there, you can play around with bringing out complementary colors for a cohesive palette (I warmed Marcille's skintone and hair but made sure to bring out her deep blue clothes). Avoid using too many blend mode layers; hand-picking colors will really help you build your innate color sense and find a color style. Try using saturated colors in unexpected places! If you're coloring a night scene, try using deep blues or greens or magentas. You see these deep colors used all the time in older anime because they couldn't rely on a lightness scale to make colors darker, they had to use darker paints with specific hues. Don't overthink it, simpler is better!]