darken a bit the green of sent message box in light theme

ts/state/ducks/SessionTheme.tsx

@@ -149,7 +149,7 @@ const lightColorTextSubtle = `${black}99`;
 const lightColorTextAccent = '#00c769';
 const lightColorSessionShadow = `0 0 4px 0 ${black}5E`;
 const lightColorComposeViewBg = '#efefef';
-const lightColorSentMessageBg = accentLightTheme;
+const lightColorSentMessageBg = 'hsl(152, 100%, 40%)';
 const lightColorSentMessageText = white;
 const lightColorClickableHovered = '#dfdfdf';
 const lightColorSessionBorderColor = borderLightThemeColor;