Hi Ummidk
if you go to your owners manual if you have it on the inside first page should be a stuck in retail delivery sheet on this the 3 digit colour code should be listed like for my light silver the colour is all 1d4 but they should list both bumper and main colour as well for a two tone, toyota have touch up 15ml bottles in spare parts. But armed with the correct code you can search the internet for cheaper touch up or large quantity's can be mixed up at an auto paint shop to match code. Here is a link that may help you too
http://www.automotivetouchup.com/touch-up-paint/toyota/2004/rav4/ with this you can alter to your year to suit yours and that once searched should bring up your bumper colour and code . Also there is label tag on the drivers side door that should list paint colours as a code as well but it is harder to decipher (ie C/TR:1CO/LA17 = colour code 1CO as appearing on tag) but you should be able to align the plate codes with the codes from the link for confirmation if you don't have it listed in your manual :thumbs_up: