The red dot beside the chat is the availability. It shows various types of moods of user. The red dot shows that the user is busy.
dont knw
A red light district is the part of a city that has prostitutes.
Blinking red light signifies alertness or danger.
You can easily find the images of Gmail icon. You can google it to find the red colored image. It is an image of red package.
Assuming you mean visible light, that would be red light.
The red light that blinks after you lock the car is the 'alarm armed' light.
A red traffic light means stop, and you must come to a complete stop before the intersection or crosswalk. A flashing red traffic light indicates the same as a regular red light – you must come to a complete stop, but you can proceed when the way is clear after yielding to other vehicles and pedestrians.
front of light
A red light means your DS is running low on battery, and needs recharging.
This means you could log in via Gmail. Gmail acts as an account universally. You can log into most of the accounts using this.
its mean that
stop or give way.