LED rear bulbs?

[onward]

I have just purchased some clear light fittings for the rear but now I need need the correct colour bulbs.
LED would be good - can anyone send a link to the correct spec bulb please.
Someone mentioned that if you get the wrong indicator bulb it will flash too quickly ?
Thanks in advance......

[onward]

Nothing is ever simple - not even changing a light bulb !
I was told a 360 led but there's loads out there
How would you fit a relay? Where does it go?

[onward]

so crossflow,
what would you recommend to use for my clear cases? they are clear with a red reflector in the middle - I'm not fussed about LED, I just thought they would be brighter -
rarely is there another car up my ar anyway !