Can not change font color of all elements within rows and columns in table tags

Can not change font color of all elements within rows and columns in table
tags

I am trying to change font color of different web elements in different
areas. Mostly it works fine while I am using I am using like this:
<font color='BLUE'>
<DIV>
<SPAN style="WHITE-SPACE: normal; TEXT-TRANSFORM: none; WORD-SPACING: 0px;
FLOAT: none; : rgb(34,34,34); FONT: 13px Calibri;
-webkit-text-size-adjust: auto">
</SPAN>
</DIV>
<DIV>
<SPAN style="BORDER-TOP- : ; WHITE-SPACE: normal; TEXT-TRANSFORM:
none; WORD-SPACING: 0px; FLOAT: none; : rgb(0,0,0); FONT: large
arial, sans-serif; -webkit-text-size-adjust: auto">abc
</SPAN>
</DIV>
</font>
or just
<font color='BLUE'>
<P>abc
</P>
</font>
BUT when I am trying to change font color and formation of some text
elements which are under tags, it dorsn't work!
<font color='white'>
<DIV>
<TABLE style="WIDTH: 165pt; BORDER-COLLAPSE: collapse; border=0
cellSpacing=0 cellPadding=0 width=219>
<COLGROUP>
<COL style="WIDTH: 21pt; mso-width-source: userset; mso-width-alt:
1024" width=28>
<COL style="WIDTH: 92pt; mso-width-source: userset; mso-width-alt:
4498" width=123>
<TBODY>
<TR style="HEIGHT: 66pt; mso-height-source: userset" height=88>
<TD style="BORDER-BOTTOM: #ece9d8; BORDER-LEFT: #ece9d8;
- : transparent; WIDTH: 165pt; HEIGHT: 66pt; BORDER-TOP:
#ece9d8; BORDER-RIGHT: #ece9d8" class=xl65 height=88 width=219
colSpan=4><FONT size=2 face=Calibri>Students, if you are looking
for opportunities to earn community service hours, please check
out the guidance board located at the south entrance of the high
school hallway.</FONT>
</TD></TR>
<TR style="HEIGHT: 107.25pt; mso-height-source: userset" height=143>
<TD style="BORDER-BOTTOM: #ece9d8; BORDER-LEFT: #ece9d8;
- : transparent; WIDTH: 165pt; HEIGHT: 107.25pt; BORDER-TOP:
#ece9d8; BORDER-RIGHT: #ece9d8" class=xl65 height=143 width=219
colSpan=4>
<FONT size=2 face=Calibri>There will be sign up meetings for
winter sports in the gym during break next week. <BR>All students
interested in playing soccer, please sign-up in the gym during
break tomorrow.<BR>Students wanting to play basketball, please
sign-up on Thursday, 9/19.
<SPAN style="mso-spacerun: yes">&nbsp;
</SPAN><BR><BR></FONT></TD></TR>
</TBODY>
</TABLE>
</DIV>
</font>
Please suggest me what should I do if I want to keep generic rule to
change font colors for all sort of formats.