I'm stuck on how to add more colors to titlescreen since I need 5 colors in the same 16x16 area.
I've read about adding sprites but how can I do that without coding?
Sadly, I think you will have to reduce your tile screen to the restriction... 3 colors + common transparent color.
Yep with some code you could overlap with some sprite... but it's not very easy.
You can use DrawSprite macros to overlap some sprites over background tiles, but that takes up quite a bit of memory and you'll run out pretty quick. Honestly the best solution is to find a way to reduce it to 3 colors within the color cell boundaries.