Hi guys,
I was working with setting an arrow colour via the blueprint graph and I couldnt seem to find it amongst the struct list. What I tried as a work around is converting a linear colour, then I removed the linear colour input from the conversion which allowed me to use the colour picker but after selecting a colour I got a dramatic slowdown in fps down to a steady 2fps and I reproduced the issue.
I’ll go ahead and use the make colour literal to see how that goes, but some people may want to make byte colour struct variables within blueprint 
Thanks
Hey Daniel,
Thanks for your report! You are absolutely right that we are missing the Color struct from our variable options! I have filed a defect report to have this struct added to our variables list.
There is a workaround in the mean time–when you have the Set ArrowColor node, if you drag off of the ArrowColor input pin, you can search for a Make Color node and put in Byte values for R/G/B/A. For the LinearColor struct, you can also drag off the input pin (color picker) and search for Make LinearColor to be able to pass in Float values for R/G/B/A.

Hope this helps you out!
Thanks!
-Steve
Thanks for that, the other issue Im having seems to be related to the realtime button and colour picker but I still havent been able to narrow it down so when I get a better idea of whats causing it I’ll make a new thread 
While I can’t see any reason not to include FColor as a struct as well,
I can offer you this as a solution!
There is a LinearColor to Color converter
enjoy!