the blackness on characters

whenever i play a rom with the no$gba, on ds games the some of the characters are a splid black and sometimes any icon thats interactive turns black.

What game? It's just incompatible then.

many games.sometimes just a little bit, but on others its alot. an example is Spider-man:web of shadows where spidey is just the solid black, where as The world ends with you all of the moving characters outside of battle are the solid black also the text bubbles are the solid black but during battle every things fine.

No$GBA is not compatible with The World End With You. That's why it's black. It doesn't work at all in 2.6a, and barely starts in 2.6As far as Spider Man goes, are you sure it's not just playing as Spiderman with the Symbiote? :)
Just kidding, make sure to use the latest no$gba, 2.6a, and see if that helps.

The Spiderman game is 3D, so there's your problem (no$gba has many issues with). If you were using 2.6a of course.