The pink/purple streaks from my hair when it was light brown was from when my hair was pink, I had bright pink hair a few years ago, it was platinum blonde then I tried to do pink streaks and it ended up fading over my entire hair. So when I went to try to get a regular job again, I tried to get rid of the pink, bleach only lightened it, so I dyed it the brown color, and it ended up brown with the streaks. My hair is naturally curly, when it's straight, it's because I straightened it with a flat iron.
I'm leaning towards light brown/dark blonde with possible highlights and lowlights by summer. For now keeping the red as I still have red dye left, still have red conditioner I made (it helps the hair not fade all patchy), so going to use all that up, then change the color.
Edit: I've added some pics here of when my hair was hot pink, this was before the brown with the grey tank top. This pink was a permanent hair dye not a semi-permanent. It's professional grade, I have family members that do hair professionally, so was able to get it. This pink is by Goldwell, I forgot the exact shade but I could find out if anyone wanted to know. I have to warn though, the dye does not come out, it has to be dyed over and grow out, which is why I cut my hair short when it was brown. But the color lasts longer than say manic panic and other semi-permanents, which is what I used before going permanent. I had pink hair for over 1 1/2 years.