You can overwrite svg fill color via css like below and also target different elements like <path> polygon circle etc.
#Main svg:hover {
fill: #fce57e;
}
#Main svg:hover path {
fill: #fce57e;
}
#Main svg:hover plygon {
fill: #fce57e;
}
#Main svg:hover circle {
fill: #fce57e;
}