change dropdown hover color to variable
change dropdown hover color to variable

Sage-Bionetworks/SynapseWebClient,Sage-Bionetworks/SynapseWebClient,jay-hodgson/SynapseWebClient,jay-hodgson/SynapseWebClient,Sage-Bionetworks/SynapseWebClient,jay-hodgson/SynapseWebClient,jay-hodgson/SynapseWebClient,Sage-Bionetworks/SynapseWebClient