I’ve just tried a video with coloured .SRT subtitles and they’re still coming out white.
Here’s the first few lines:
1
00:00:04,440 --> 00:00:06,600
<font color="#ffff00">Are you all right, love?</font> No, I'm not all right, Dad. I'm pregnant!
2
00:00:06,640 --> 00:00:08,120
<font color="#00ffff">Is there someone who can go along with you?</font>
3
00:00:08,160 --> 00:00:09,800
My mum's just ran off with her and my dad's savings.
4
00:00:09,840 --> 00:00:11,360
My sister's on remand.
5
00:00:11,400 --> 00:00:13,520
I won't be judged by a woman who tried to have her fiance murdered.
6
00:00:13,560 --> 00:00:14,760
<font color="#00ffff">Tried and failed.</font>
7
00:00:14,800 --> 00:00:16,000
Oh, my God!
8
00:00:16,040 --> 00:00:18,000
<font color="#ffff00">But it's my coat, isn't it?</font>