That's a pretty good start! I had a Nepenthes for a while. I mounted (hung) it in the upper half of the enclosure so it would get misted several times throughout the day & night. The
plant did
great, but the chameleon seemed to ignore it; I don't recall seeing him climb or hide in it once, so I eventually (after about half a year) took it out.
It still does great hanging over Missus' plant table, and
NOW the cham uses it to get to the highest point above the table
...
I have a tall snake plant (another dracaena) in one back corner that doesn't get any/much light. He ignored that for six months too, but has since discovered and come to appreciate(?

) its climbing attributes. (I.e. he climbs on it).
He
loves his 3 mass canes (more dracaenas).
For color (keeping in mind that color is more likely for us than them), I have a
Tradescantia pallida (purple leaves/pink flowers). Several of the other plants (philodendron, nepenthes, schefflera) have also bloomed, though all their flowers have been diminutive. Flowers of any plant are ephemeral, and some (like
bromeliads) only bloom once. I guess my point is, for permanent color, look to
foliage (the plants in this link are not necessarily chameleon-safe—just examples of colorful houseplants). Just choose from the known lists or cross-reference with them.