i found out that what you want to do is go into files then Documents > My Games > Terraria then open config.json and go down to where it says UseRazerRGB (or whatever brand of peripherals you use - razer, logitech, corsair, steelseries) and change the variable 'false' to 'true' if it isn't already like that, and replace the part where it says 'null' underneath that and copy and paste this text into there:
{
"Keyboard": {
"R": 1.0,
"G": 0.765,
"B": 0.568
},
"Mouse": {
"R": 1.0,
"G": 0.765,
"B": 0.568
},
"Keypad": {
"R": 1.0,
"G": 0.765,
"B": 0.568
},
"Mousepad": {
"R": 1.0,
"G": 0.765,
"B": 0.568
},
"Headset": {
"R": 1.0,
"G": 0.765,
"B": 0.568
},
"Generic": {
"R": 1.0,
"G": 0.765,
"B": 0.568
},
"Virtual": {
"R": 1.0,
"G": 0.765,
"B": 0.568
}
},
if that doesn't work then delete the config.json and replace it with this file, note that this is for 1.4.4.9 and if your settings are different to mine then you might need to change them back because this is taken directly from my terraria files