Very nice graphics! I included it in my ProcJam compilation video series, if you’d like to take a look. :)

I like how each kingdom has a slightly different look/colors.  I think that would be a good thing to focus on, making them even more distinct...

Looks like a great start to a fun (potentially) strategy or world building game!

That is pretty neat generator that generate nice islands and kingdom upon them :) Thanks for creating it :) Here are some stuff that you could add to make it your kingdom generator pops even more:

• You might want to consider for the future more of urban planning of the kingdom from inside (where is the king castle with respect to housing and the rest. 
• Also, you could make some rounds connecting different kingdoms to give the feeling that these kingdoms have some trading between them.
• You can also add some layer on top as clouds using perlin noise to give life to the whole world
• change the color pallete for day and night cycles  will be fun or season changes.

Overall, great entry :)