Using certain colors on text in /title doesn't show a color like it should be.

When testing this command,:

/title @p title {text:"Test",color:"brown"}

it doesn't show the color of the text like its supposed to.

What I expected to happen was for the text to show up in the color of brown, purple, etc.

What actually happened was that after the command was entered, the text didn't show the proper color.

Steps To Reproduce:
1. Create a command like these examples, either with a command block, or the chat box:

/title @p title {text:"Test",color:"brown"}

/title @p title {text:"Test",color:"pink"}

2. Activate the command.