You mean well. I know you hope that by persuading your local council to bathe your town or city's most significant building or monument in blue light, that you are doing a good thing. You have bought into the notion that increasing "awareness of autism" will help your autistic children. But do you know where the notion of "light it up blue" originated? Are you aware how people who are themselves autistic feel about this particular campaign?
April 2nd has been marked as World Autism Awareness Day since the late 80's and in 2007 it was adopted by the United Nations. Light it up blue came along later; in 2010 it was set up by Autism Speaks, a huge and disreputable USA-based organisation. Autism Speaks seeks a world without autism, it does not support autistic people, but bullies and silences them. Autism Speaks regularly makes outrageously hurtful and damaging statements. Many in the autistic community call for a boycott of the organisation.
Blue is the corporate colour of Autism Speaks, that's it. Blue is not associated with autism for any other reason. When you lobby to light up blue or you "wear blue for autism" you are demonstrating your support of Autism Speaks the organisation, not of autistic people or their needs.
Autistic people and their allies are trying to get the word out about how damaging the light it up blue campaign is.
I ask that you take their views seriously and stop lighting up blue.