Data Only Shows In Figure When Brushed?

I'm plotting some training results from my neural net. The data is in there but can't be colored and doesn't show unless I use the brush selector (See pictures below)

The training accuracy plots just fine, but validation accuracy is invisible no matter what markersize or color I feed it (it should be showing up on its own without those specifications anyways).

Validation Frequency is every 50 iterations (or epochs as they are 1:1). MATLAB stores the data as a NaN for each iteration before the Validation Accuracy is calculated, but it is my understanding this shouldn't cause any issues.

I've tried many different variations of the code, but this is my code below which should work. The data is a 1x4000 double stored in a structure.

plotnet = 1;
plot(NETS2(plotnet).Tr.ValidationAccuracy)