One time, last rainy season, I was riding through Temecula's wine country... I had on my yellow rainproof helmet cover( does your's just encircle the helmet area and not provide cover about the neck, like mine? ) and blue rain proof three-fingered 'lobster mites.' Plus I had on my orange rainproof thinsolate jacket.. Maybe the road traffic could pick up that color combination? But my head cover does not look like a condom, I don't think..? Got it from Adventure Cycling's "Cyclosource."I felt half way comfortable..
Some regular kitted US postie types- not wearing any raingear at all, snickered at my yellow and blue hands and helmet.. I ran into them at a nearby coffee shop.. They looked so miserable- I thought I had the last snicker.. I don't think just stopping for hot chocolate can stop you from getting sick..?