The change adds note for previous colour in colour blind and DROP
in profile table actions. In colour blind mode only valid previous
colour is GREEN. To drop packets based on new colour one needs to
set action as DROP in profile table.

Signed-off-by: Vipin Varghese <redacted>
---

V2:
changed wording from 0 to GREEN - Cristian Dumitrescu
reword the note section         - Vipin Varghese
---
 doc/guides/sample_app_ug/qos_metering.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/guides/sample_app_ug/qos_metering.rst b/doc/guides/sample_app_ug/qos_metering.rst
index 6391841c6..2e8e0175f 100644
--- a/doc/guides/sample_app_ug/qos_metering.rst
+++ b/doc/guides/sample_app_ug/qos_metering.rst

@@ -149,3 +149,7 @@ In this particular case:
 *   Every packet which color has improved is dropped (this particular case can't happen, so these values will not be used).
 
 *   For the rest of the cases, the color is changed to red.
+
+.. note::
+    * In color blind mode, first row GREEN colour is only valid.
+    * To drop the packet, policer_table action has to be set to DROP.

-- 
2.17.1