This is the 18152nd most frequent Russian word.
цветную
"Цветную" means "colored" or "multicolored" in English.
Here, 'цветную' is the feminine singular accusative form of 'цветной,' meaning 'colorful,' used as an adjective describing 'футболку' (t-shirt).
Я купил цветную футболку на рынке.
I bought a colorful t-shirt at the market.
In this sentence, 'цветную' modifies 'передачу' (broadcast), expressing the quality of being colorful or vivid.
Она любит смотреть цветную передачу по телевизору.
She likes watching a colorful broadcast on TV.
The term 'цветную' describes the object 'бумагу' (paper), indicating it is not monochromatic but has various colors.