What is a good practice to make icons visible on osms?

Question

I am adding features by using

var feature = new OpenLayers.Feature.Vector( new OpenLayers.Geometry.Point( lng ,lat  ).transform(epsg4326, projectTo),  {description:'some description'} , {externalGraphic: 'mypicture.png', graphicHeight: 32, graphicWidth: 32, graphicXOffset:-16, graphicYOffset:-16} );

But they are barely visible given that almost all colors are being used in osms.

Answer 1

OSM-related:
- Use another map rendering style as background (see Tiles and Rendering). Examples. Remember: OSM is just data - and many different maps (and services) are made of it.
- … But please respect the individual tile usage policies. Example: policy for osm.org's tiles
(not-OSM-related:) Use an "externalGraphic: 'mypicture.png'" which has a big border/shadow around it - so it sticks out of the map. Or use the shadow feature of OpenLayers. (I did not try this myself)

What is a good practice to make icons visible on osms?

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