Liliana, I don't know anything about your situation, nor the politics apparent in this thread.
We've found that sometimes the simple can be very useful.
Try using some highlighters (colored felt tip pens) to make anything unusual or critical stand out more.
Placing a strip "cocked", or at an unusual angle in the bay will draw attention. (The mind - usually - likes things tidy. The angle will be an irritation, also hopefully a reminder.)
We use (on aerodrome) red holders for inbound, blue for outbound, yellow for local flights, all with white strips, and red strips in a yellow holder to indicate the runway blocked.
Get some red felt pens. Play around with them. Talk with your colleagues and management, get an agreement for how to use them.
You could be waiting a while for new holders or new colored strips, even if you want them yesterday.