Tldr: Bangladesh 🇧🇩 not doing so hot right now. Thoughts as a diaspora imperial core desi who lives a very comfortable life.
I feel really immature right about now. For a good while I just kept denying the color revolution hints to the point where even my very lib Dad was able to point them out. Feel like such a complete jackass, it just feels so fucking different when you're in the moment and it's your country down the line. That doesn't mean I don't have the same solidarity for all global south nations but this one just felt so personal. What's happening in Bangladesh right now seems like nothing compared to the horrific struggle that West Asia has endured, but I guess I'm joining the club. 
But yeah, they literally took over my country and there's nothing I, a diaspora bengali, can do about it. Sometimes it feels like I have survivors guilt, that I got out of the country and immigrated to the imperial core (well my parents did) where I could live a far more comfortable life while a lot of my peers even here in the US are living much harder lives. 
This is also compounded by the fact that I live in a white picket fence neighborhood where every neighborhood family are Trumpers or respectful Kamala-ists who are just "simple folk" out raising their family. My dad recently hanged up an American flag and a Bangladeshi flag on our lawn and now I'm just sick even thinking about it. 
I might just tell my dad to take it american flag down if not both (he keeps telling me there's some homeowner association "law" that you have to have the USian flag alongside other flags). The only thing that really cheers me up besides treats is Yahya Sinwar and the axis of resistance taking Israel down screw by screw.
Fuck the USA. I will never forget this moment in my entire fucking life. I just feel very off right now and this was my vent post. Part of me wishes that this wasn't a takeover, but that part of me is slowly going away every passing second.
What is a color revolution?
Short answer: a false one.
The side of it reported in the media will often involve lots of flags (including foreign flags like the US and UK flags) and public protests about an issue that will appeal to westerners, e.g. 'freedom', gender equality, sexual equality, etc. The aim is to topple the current leadership and replace them with a West-friendly candidate. The colour revolution gives the appearance of popular support.
The current leadership isn't necessarily 'good' or 'bad' or 'democratically' elected; but they will not be friendly to the West. Maybe it works the other way around, too, but I don't remember any global south countries doing a colour revolution in the global north.
Hopefully someone else has a more theoretical answer.
Relevant: Luna Oi on how to spot a color revolution
(not sure what's up with the audio though)
Setting the conditions for a military coup by manufacturing populist outrage and broadcasting that outrage to the world and trying to de-legitimize the current government. A great example of attempted color revolution would be in Venezuela this year with the election when right wing rioters stormed cities and kept claiming that the election was stolen from them.